Machine shop to redrill rotors

Good day gents. I’m looking for a decent place at a fair price to

  1. redrill a pair of 280 x 30 mm rotors from 5x114.3 to 4x114.3
  2. cut diameter from 280 to 276.

Who do you suggest and what’s the avg cost on such an operation?
oh and I really appreciate all the help and ideas you guys put out there in the past.
Sincerely,
zac